Colca Canyon is a canyon of the Colca River in southern Peru. It is located about 100 miles (160 kilometers) northwest of Arequipa. It is more than twice as deep as the Grand Canyon in the United States at 4,160 m. However, the canyon’s walls are not as vertical as those of the Grand Canyon. The Colca Valley is a colorful Andean valley with towns founded in Spanish Colonial times and formerly inhabited by the Collaguas and the Cabanas. The local people still maintain ancestral traditions and continue to cultivate the pre-Inca stepped terraces.http://bem.2be.pl/IS/peru_380.jpg